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INDEX
Tartaric acid, evaporating, 382
Tate process of waterproofing, 289
Taylor, Hugh S., 749
Tees, pipe, 45, 46
Temperature, conversion constants, 988
control, automatic, 470, 471
effect of, on leaching, 345 Templets, copper sampling, 578 Testing cements, 847
fans, 155
glue, 848
Tetrahedrons, production of, in crushing, 235 Tetrathionates, formation of, 721 Thermal conductivity, clays, 500 Thermal expansion of clays, testing, 488 Thermit method of heat production, 520 Thermocouples, 419
calibration data for, 443
constancy of, 420
galvanometer with, 422
immersion depth, 439
installations of, 432
junction box, 436
mounting of, 421
potentiometer with, 426
protecting tubes for, 440
reproducibility, 420
wiring diagrams, 434, 435 Thermodynamic scale, 409 Thermometer, accuracy of, 412
distance-reading, 417
emergent-stem, correction, 414
gas, 409
indicating,   416
industrial, 413
mercurial, 410, 416
partial immersion, 410, 411, 415
platinum, 462
pressure, 417
recording, 416
resistance, 462
vapor-pressure, 417 Thermometric points, standard, 410 Therm ometry, 410 et seq. Thermo-optical pyrometer, 449 Thickener, Dorr, 280 Thickness of filter cake, 295 Thiosulphates, reduction by, 721 Thomson e.m.f., 419
rule, 735 Thorium, analytical methods, 907
compounds, 909
extraction, 908
metallic, 909
occurrence, 907
radioactive series, 860
uses of, 910
Thwing radiation pyrometer, 457 Timber Butte, classification at, 275 Timber, structural, 934
ultimate strength, 936
working stresses, 937 Tin, electrolytic production of, 746 Tin, oxidation-reduction behavior, 703
Transformation point recorders, 469 Transmission of heat, 360 Trautschold, Reginald, 79 Trays in fractionating column, 628, 629 Tridymite, inversion to, 506 Trommels, 250, 251
capacity of, 254
motion in, 252
range of, 254
wet screening in, 254 Tube mill, 203, 206
Tubes for protecting thermocouples, 440 Tumble-box mixers, 546 Tungsten, analytical methods for, 900
compounds, 897
concentration of, 897
extraction of, 895
ferroalloy, 899
metallic, 898
occurrence, 894
reduction of, 898
sampling, 900
uses of, 899 Turbines, economy, 24
efficiency curve of, 26, 27
extraction, 27
low pressure, 25
sizes, 24
steam, 23
superheat for, 25
water wheel, 71 Tyler standard screen, 259
U
Ultra centrifugation, 791
Ultramicroscope, 776
United Eastern, classification at, 274, 275
Universal wax, 866
Uranium, analytical methods, 892
compounds of, 890
concentration of, 889
extraction, 889
ferroalloy, 891
metallic, 891
occurrence, 889
oxide, calculating percentage, 878
radioactive series, 859
uses of, 891 Utah Copper Co., classification at, 273
Vacuum augmentcr, 31
chamber (pumps), 127
evaporation, 362
filtration, 294-298
Howard's pan, 369
machines for refrigeration, 670
pan with agitator, 550
pump, 30 Valence, calculation of polar, 693
changes due to liberation of electrons, 685
XV